上海市竹园第一污水处理厂升级改造工程对长江口水体环境的影响  

Influence of Zhuyuan No.1 Wastewater Treatment Plant Upgrading and Rebuilding Engineering to the Water Environment in the Changjiang Estuary

作　　者：江霜英[1] 王雨[1] 张海平[1] 姜卫星[1] 

机构地区：[1]同济大学环境科学与工程学院,上海200092

出　　处：《环境科学研究》2008年第1期159-167,共9页Research of Environmental Sciences

摘　　要：上海市竹园第一污水处理厂升级改造工程处理规模为170×10^4m^3／d，远期采用A／O生物脱氮工艺，近期按普通曝气工艺运行．选择枯季和丰季，考虑进水CODCr在未经处理、经现有化学生物絮凝工艺处理和经升级改造后工艺处理下，应用数学模型对污水处理厂尾水排放对长江口CODCr混合区的范围影响以及敏感区的入侵进行模拟预测．结果表明：在枯季最不利水文条件下，升级改造工艺处理后CODCr稀释度为100～150倍的水域面积接近误差范围，远小于未经处理和现有工艺处理后的混合区范围；上游8km处ρ（CODCr）的最大增量为0.28mg／L，已接近背景值，远小于未经处理和现有工艺处理后的最大增量，对敏感区凌桥取水口不会造成影响.With design capacity of 170 × 10^4 m^3/d, the new structure of A/O biological nitrogen removal technology will be applied for the upgrading and rebuilding engineering in Shanghai Zhuyuan No. 1 Wastewater Treatment Plant in the long term, while the ordinary aeration technology will be applied in the near future. Under dry/wet seasons, considering three conditions including influent CODCr, untreated, influent CODCr, treated with current chemical-biological flocculation, and treated with upgraded and rebuilt process, mathematical models were applied to simulate and project the intrusion of sewage plant effluent into CODCr, mixed zone and sensitive area at Changjiang Estuary. The results indicate that, under the worst hydrological conditions of dry season, the CODe, 100- 150 times dilution area is far smaller after upgrading and rebuilding engineering, and the mass concentration of CODe, increment （0.28 mg/L） at upstream 8 km approaches to the background value and is also far lower than the other two conditions, and thus will not exert major impacts on the water intake at Lingqiao.

关 键 词：竹园 长江口 升级改造工程 数值模拟 

分 类 号：X703[环境科学与工程—环境工程]